simkhadasostika991 simkhadasostika991

18-08-2021
Mathematics

contestada

if angle c=60° , b=5 ,a=4 then find the value of the c ?

Respuesta :

sadovnichenkoant sadovnichenkoant

18-08-2021

Answer:

c=sqrt21

Step-by-step explanation:

angle c is the angle between a and b, so use the cos law

c^2=a^2+b^2-2*a*b*cosC

c^2= 16+25-2*4*5*1/2

c^2=21

c=sqrt21

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